durabo is correct. Both are chromelined.
The two kits I am looking at are
http://palmettostatearmory.com/index.php/ar-15-05/rifle-kits/16-mid-length-a2-style-profile-cmv-chrome-lined-mp-rifle-kit.html
Their website says this about the barrel...
"Barrel: 16", CMV (4150) Steel, Special A2-style profile, 5.56 NATO chamber with a 6-groove, 1:7 right-hand twist ,
chrome-lined, bore, mid-length gas port, and M4 feedramps. Barrels are high pressure tested, mag particle inspected, and are finished off with a taper pinned, f-marked, front sight post, standard Mid-length handguards with heat shields, and an A2 flash hider."
and
http://palmettostatearmory.com/index.php/ar-15-05/rifle-kits/16-hammer-forged-mid-length-rifle-kit.html
Their website says this about the hammer forged barrel...
"Barrel: A proprietary blend of Hammer forged chrome molly vanadium made by FN that is referred to as "Machine Gun Steel" by virtue of its use in FN's M249 and M240 weapons. The hammer forging process work hardens the steel, making it more durable. In addition, the chrome process for the bore allows for a lining
almost twice as thick as a standard M16 for enhanced durability. Chambered in 5.56 NATO, with a 1/7 twist, M4 barrel extension, and a Mid-length gas system. A2 style profile barrel is Mil-spec phosphate coated, High Pressure tested and Magnetic Particle inspected. Barrel is finished off with an F-marked front sight post with sling swivel, standard handguards and an A2 flash hider."
My question is right now I can buy the second kit or I can wait for the first kit to become avalable (and I don't know how much the first kit is) but do I want to avoide a double chrome lined barrel?